A rock is dropped from a height of 25 feet. The function h=-16t^2 + 25 gives the height h of the rock after t seconds. When does it hit the ground?

Martina hits a volleyball ball upward with an initial velocity of 13 meters/sec. When she hits the ball, it is one meter above the ground. How long will it take the ball to hit the ground?

How do I write 4 times the sum of a number and 8.

Charlene has 12 plastic cups. Of the 12 plastic cups, 3 were green, 4 are red and 5 are blue. She stacks the cups into a single stack in random order. What is the probability that the cup on top of the stack is not green

How many day is in a dogs year if there is 7 dog years in a human year

What is - 3t + - 8 = 25

A Mathematics competition consists of 30 multiple-choice questions. A correct answer is awarded 4 marks while 1 mark is deducted for a wrong answer. No marks will be awarded or deducted for questions not attempted.

Given the function f (x) = 0.5|x - 4| - 3, for what values of x is f (x) = 7?

The sum of two numbers is 46. The smaller number is 18 less than the larger number. What are the numbers?

Is p=7 a solution of the equation 4p - 5 = 16

A father and son are digging a garden that is 7 feet long and 5 feet wide. the father, working alone, can dig the garden in 3 hours. the son can do the job in 4 hours.