#15 fill in the missing term in
the pair of equivalent
ratios.
48: 30 = 8: _

5

use the same number to divide 48 and 30 into the simplest number

5

Step-by-step explanation:

Many ways to do this. One way would be to rewrite these as fractions so 48/30 = 8/x (lets call the blank x). cross multiply or simplify: 48x = 240 or

8/5 = 8/x

Thus.

x = 5

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.