How do i check basic equations

Ou decide to ride your bike for 30 minutes, raising your heart rate to the middle of your target heart rate zone.

As a water quality assurance employee for local Aqua America, Inc branch record a drop in water levels from 28 feet to 7 feet at your reservoir. What is your percentage decrease?

Melissa, Charlie, and Josh have a total of $90 in their wallets. Josh has 3 times what Charlie has. Melissa has $10 less than Charlie. How much does each have?

X h (x) -2 - 10 -1 - 7 0 - 4 1 - 1 2 2 What is the y-intercept?

Which equation is the inverse of y=2x^2 - 8

yearly 17% rate of failure. Answer the following question. What is the probability that if you buy four computers, at least 1 will fail within a year?

Is - x equal to - 1x?

I ran 13 miles in 2 1/4 hours. What was my average speed?

The tree house will be 8 feet off the ground. Peter will hang a rope, with knots tied for foot holds. Each knot uses an additional 2 inches of rope.

Using the information below, choose the correct answers. Amount: $125,000 Rate: 7.5 % Payments: 360 @ $874.02 Total Interest: $189,647.20 1. How much will be repaid for this loan? A. 189,646.53 B. 125,000.00 C. 314,647.20 2.