Phillip has x marbles. His father gave him 2 times the number of marbles he has. Now he has 21. How many marbles did Phillip have before?

A can can be rented for $50 per day with unlimited mileage, or for $40 per day plus 25 cents per mile. For what daily mileages will be unlimited mileage plan save you money?

The probability that a randomly selected person has high blood pressure (the event H) is P (H) = 0.3 and the probability that a randomly selected person is a runner (the event R) is P (R) = 0.5.

Consider the equation y=-x^2-7x+12

Find the magnitude of the vector from the origin to (8. - 6) and write the vector as the sum of unit vectors. 1. 12, 87 + 67 c. 12. 87-67

Circle O has a circumference of 132 feet. What is the approximate area of a circle O?

What is a reasonable estimate for 2,437 times 42

Patti has 2 glue sticks that are partially used one has 1/5 left and one has 3/10 left which glue stick has more

What needs to be corrected in this construction of a line parallel to a be passing through C

the instructions for mixing a rose fertilizer call for 3/8 cup of potash and 1 3/4 cups of nitrogen. what is the ratio of nitrogen to potash

How do you solve - 4 + 2 (7m + 5) = - 106