Y varies directly as x. if x = 5 when y=12. find x when y=30

Adam put $100 in a savings account. After 10 years, he had $1649 in the account. What rate of interest did he earn? Use the formula A = Pert, where A is the ending amount, P is the principal (initial amount), r is the interest rate, and t is time.

If x^2 + xy = 20 and dx/dt = - 4 when x = - 5 and y = 1, what is dy/dt

Is 3/4 a whole number, interger, rational number, irrational number, or a real number

A bag contains 4 red marbles, 5 blue marbles and 3 green marbles. If two marbles are drawn out of the bag, what is the exact probability that both marbles drawn will be blue?

The amount of time t it takes for a group of volunteers to clean up a park varies inversely with the number of volunteers v. If it takes 5 volunteers 2.5 hours to clean up the park, which of the following equations models this situation

Simplify: 7-8*7-4 A 1712 B 174 C 712 D 732

Valencia types 42 words per minute for 7 2/3 minutes. How many word did she type in all?

A jet travels 4984 miles against the wind in 8 hours and 6504 miles with the wind in the same amount of time. What is the rate of the jet in still air and what is the rate of the wind?

The number of students in my class went from 25 students to 30 students. What was the percent increase?

Solve the equation by factoring x^2-7x+12=0