Find the exact value of the expression, if it is defined. (if an answer is undefined, enter undefined.)

Kelly spent $45 more on boots than she did on pair of jeans. she spent $79.50 on the boots. how much did she spend on the jeans?

You invest $3,150.00 in a stock plan. The first year, it loses 5% of its value. The second year, it gains 9% of its value. What is the value of your stocks in the second year compared to your initial investment?

Hot dogs are sold in packs of 10. Hot dog buns are sold in packs of 8. Elijah is having a party and is serving hot dogs with buns. What is the least number of hot dogs Elijah can make without having any buns or hot dogs leftover

In a multiple choice quiz there are 5 questions and 4 choices for each question (a, b, c, d). robin has not studied for the quiz at all, and decides to randomly guess the answers. (round your answers to four decimal places.)

Kim does 1/4 of a homework assignment on Monday. On Tuesday, Wednesday, and Thursday, she does 1/4 of the homework she has left from the day before.

Tricia made a circular mat from a square piece of cloth as shown in the diagram below. -14 in. In terms of pi, what is the circumference, in inches (in.), of the circular mat? O O o O 147 inches 287 inches 49 inches 567 inches

A truck driver traveled at an average speed of 64 miles per hour on a 200-mile trip to pick up a load of freight. On the return trip (with the truck fully loaded), the average speed was 38 miles per hour. Find the average speed for the round trip.

A recipe for crumb cake says to mix 3/8 cup of brown sugar and 1/3 cup of white sugar. From this sugar mixture, set aside 1/4 cup for the crumb topping. The remaining sugar mixture is used to make the cake.

Evaluate 3.6 x plus+4.5 y when x equals=3 and y equals=7.

Johanna is trying to find the probability that a cup will land open end up. She takes a cup and tosses it in the air 1000 times and each time records if it lands open end up or open end down. She finds that 630 times the cup lands open end up.