4. is the relationship shown by the data linear? if so, model the
data with an equation.
a the relationship is not linear.
b the relationship is linear, y - 1= -2(x + 4).
the relationship is lineary
- 10
19
- 13
the relationship is linear, y + 4 - 2(x - 1).

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

Arectangle has a width of 5 cm and a length of 10 cm. if the width is increased by 3, how does the perimeter change?

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $36.98. find the probability that a randomly selected bill will have an amount greater than $173, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?