29.) Write the equation of a
line that has a slope of - 7 and a
y-intercept of (0,-4).
a

y = -7x - 4

Step-by-step explanation:

Slope m = -7

Given (0,-4)

y = mx + b

-4 = -7(0) + b

b = -4

y = -7x - 4

$53.50

step-by-step explanation:

you have to subtract the amount of money chuck earned ($72.50) by the cost of the gas for the mower ($11.25) and the new string for the trimmer he bought ($7.75).

72.50-11.25=61.25

and then subtract $61.25 by the second thing he bought (the new string for the trimmer)

61.25-7.75=53.5

so in total it's $53.50 (53 dollars and 50 cents)