Trig , 2 questions, 10 pts

feel free to answer both or one

a flywheel rotates 450 times in 1 minute. how many degrees does it turn in 1 second?

a. 39 degrees

b. 2700 degrees

c. 18 degrees

the speed of a carousel is 4.3 revolutions per minute. james chooses a red horse. if the typical ride is 5 minutes, how far is his starting point is james when the ride is over?

a. 90 degrees

b. 0 degrees

c. 180 degrees

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.