Nancy sold half of her books and then bought 7 more she now has nine books how many books did she begin with

Solve the system of equations and choose the correct ordered pair. 3x + 4y = 385x - 5y = - 30

If Kelly's heart beats an average of 1x10^2 times per minute about how many times does Kelly's heart beat in a year? (Hint: 1 year is 525,600 minutes.)

Megan has $50 and saves $5.50 each week. Connor has $18.50 and saves $7.75 each week. After how many weeks will megan and connor have saved the same amount

Jaylen is making biscuits using the recipe. how many cups of flour will he need to make 30 biscuits? 2 cups of flour for every 8 biscuits.

Which of the following is the rational exponent expression of sixth root of f? f6 f to the one sixth power f over six 6f

Allie and Samuel are rock climbing *Allie climbs 5 1/2 meters in the first 1/4 hour. *Samual climbs 14 1/4 meters in the first 3/4 hour. each person's rate stays the same for the first hour they climb.

Equation for translation of 2 units left and 9 units down

Lo is leaving from work today at 5:30 p. m. she has errands to run before she meets her friends for dinner at 8 p. m. if it takes lo of an hour to run each errand, how many errands does she have time to run between work and dinner?

What expression is equivalent to 3•3•3•3

In which quadrant is the cosine function positive and the sine function negative? A) 1 B) 2 C) 3 D) 4