What’s the value of X here in this equation?

Step-by-step explanation:

The sum of the interior angles of a triangle is 180 degrees.

5x + 2 + 2x - 8 + 39 = 180

7x + 33 = 180

Subtract 33 to both sides

7x = 180 - 33

7x = 147

Divide both sides by 7

x = 147 / 7

x = 21

Hope this helped!

3.4 pizzas

step-by-step explanation:

given is a scatter plot showing number of pizzas sold during weeks for different issues of coupon

y represents number of pizzas sold and x number of coupons issued

y is marked verticaly and x horizontally

the trend line is given as

y =3.4x+43

this says that even when no coupon is issued pizzas sold will be 43

and rate of change of pizza sold for 1 unit of coupon = slope = 3.4

i.e. when x increases by 1 unit y increases by 3.4 units

hence for each additional coupon issued 3.4 pizzas more will be sold

investment b is an ordinary annuity with $3,909.64 in the account after one year.

step-by-step explanation: