Please help///quickly im being timed//also please show your workdue in 15 mins 4. A radioactive compound has a half-life of 50 years. When will there be less than 20% of anoriginal quantity left?

5. How many years did it take you to pay off an $45,000 car at 18% simple interest if you paid a total of $85,500?

answer: i'm not going to give you the answer, but some hints to work it out.

step-by-step explanation: so, if there is a straight line that means that the line angle is 180°. so we subtract the 2 angle measures provided, (15 and 38) from 180. so the answer is 180 - (38 + 15). (you have to solve the equation)

answer: 48

just remember to use pemdas:

parentheses

expressions

multiplication

division

addition

subtraction

logv3(x+2)=1

rewrite in exponential form:

logb(x) = y is equal to b^y =x

b = 3, y = 1

now solve for x:

3^1 = x+2)

x = 3-2

x = 1

see the picture for the graph.

answer:

125 yards

explanation:

75+50=125. that is my answer