What is the area of the rectangle?

question 5 options:

5a + 8

5 + 8a

5(a + 8)

8(5 + a)

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.