The expression cos4xcos3x+sin4xsin3x is equivalent to?

A. sin x

B. sin7x

C. cos x

D. cos7x

The 4th root of 10,000

Kathy swims at least 6 laps everyday. how do I write an inequality to show how long kathy swims each day?

Its a good thing this family has "just-in-case" funds because one month their car had two flat tires, and they spent $397.

Sara has a pizza party and invited 2 people. The pizza was cut into 8 equal slices. At the end of the pizza party there was 4/8 of the pizza left. Sara wanted to give 1 of her other friends that did not come to the party some of the leftover slices.

Find the percent of change when the price of a radio changes from $40.00 to $44.00 A 12% B10% C36.3% D40%

A grocer needs to mix raisins at $2.00 a pound with granola at $3.25 a pound to obtain 10 pounds of a mixture that costs $2.50 a pound. How many pounds of raisins and how many pounds of granola must be used?

Ms. Ellis expected 50 families to attend parent teacher conference but 60 families attended. What is the percent error?

The width w of a credit card is 3 centimeters shorter than the length l. the area is 46.75 square centimeters. find the perimeter.

Alysa volunteers for 3.7 hours each day. If she volunteered for a total of 71.8 hours, for how many days did she volunteer? Round your answer to the nearest tenth of a day, if necessary.

What is the fastest thing in the world