An airplane flies with a constant speed of 560 miles per hour. How far can it travel in 4 hours? Sarah rides her bike with a constant speed of 12 miles per hour. How far can she travel in
3 1/2 hours?

look at explanation

Step-by-step explanation:

If an airplane flies at 560 MPH, then for 4 hours you would want to take 560 x 4. if you do that you will get 2240. So in four hours the plane can travel 2240 miles.

Well for 12 MPH, that’s a full hour but you can easily divide 12 in half to get how long it would take in half an hour. So 12 x 3 is 36 (for the full 3 hours) and then for the 1/2 hour, you would have to do 12 divided by 2 which is 6. so 36 + 6 is 42. so in 3 1/2 hours, Sarah can bike 42 miles.

80% of the cookies

step-by-step explanation:

answer: c, the green line

step-by-step explanation:

there is no black line, eliminate b.

simple interest implies periodic payments, but the red line shows no payments, eliminate d.

simple interest has equal payments. if paid say every day, the graph is about a straight line (actually a stairstep).

the yellow line is not straight, eliminate a.

check: the green line is straight, answer is c.

simple interest with positive interest rate gives a straight line sloping up to the right. green line:

g(t) = $100 + ($200-$100) ÷ (20 years) × (t years)

= $100 + (4%/year) × ($100)(t years)

incidentally, the yellow line curving upward represents continuously compounded interest

y = $100 × 2^(t years / (14 assuming the yellow line hits $200 at 14 years. 2^0 is 1, so y(0) = $100; 2^(14/14) is 2, so y(14) = $200.