A balloon is 30 yards above the ground. It starts to float upwards, and the altitude increases at a rate of 5 yards per minute. Enter the altitude, in yards, of the balloon after 20 minutes.

1. 5 (8 + 3) 2. - 2 (8 - 9) 3. 3x + 2x = 10 Solve for x 4. 4 squared - 16 = 8 5. Simplify 2x + x + y 6. 1/4 + 5/4 =

solve the seperable equation: dy/dx = (sec^2) y/1+x^2

An artist sells original hand painted greeting cards. He makes $2.50 profit on a small card and $4.00 profit on a large card. He generally sells 5 large cards for every 2 small cards.

How do you solve this equation? 2x+8-22 = - 2

Which even number is not a composite number

What is the value of k in the product of powers below? 10 Superscript negative 3 Baseline times 10 times 10 Superscript k Baseline = 10 Superscript negative 3 Baseline = StartFraction 1 Over 10 cubed EndFraction

There are 15 marbles in a bag. 7 are red, the rest are a variety of colors. You want the chance of getting red to be at least 50%. How many red do you need to add?

Write 450 miles per 18 gallons as a unit rate (miles per gallon)

If 15 hats cost $120 and all the hats all cost the same amount, what is the price of each hat?

Questions 6 to 10 are related. based on a random sample of n=15 observations, we have obtained a sample mean of x (bar) = 1050. the goal is to test: h (0) : μ≤1000 and h (a) : μ>1000 assume that x is normally distributed with σ=150.