Evaluate each expression. 7+23

if a person earns $2600 in 4 weeks, how much can the person earn in 20 weeks at the same rate of pay?

In a lab, a substance was heated by 16°C over a period of 4 hours at a constant rate. What was the change in temperature each hour?

Write an equation of the circle with center (5, - 7) and radius 9.

Solve the equation using the quadratic formula v squared + 2v-8=0

Anna adds (8x + 12y) and (ax - 6y). If the correct answer is 5x + 6y, what is the value of a? A) - 3 B) - 5 C) 13 D) 3

The temperature dropped from 57 degrees to 39 degrees in 24 hours. Find the percent degrees.

The value of mn is part of what subset (s) of the real numbers? Select all that apply. rational numbers irrational numbers integers whole numbers

What statement is a correct expression of the Law of Conservation of Mass? Choose one answer A. The total mass decreases during a chemical reaction B. The total mass increased in a chemical reaction. C.

she estimates her expenses a month to be 400$ she tutors 5hours a week how much does she need to charge per hour

In the spring, you charge people $7 for going to their house to water flowers, then $4 for every hour you water. If you make $27 one day, how many hours did you spend watering?