Answer:
-9
Step-by-step explanation:
Slope is the same so y=-2x+b
Plug in x and y
-3=-2(-3)+b
-3=6+b
b=-9
(Y-intercept is -9)
Answer:
The answer is perpendicular
Step-by-step explanation:
convert the two equations into slope-intercept form
y=7/5x - 1
y=6/5x -1
Then, put it in the graph and you'll get lines intersecting at the same point which is the y-intercept.
So let's simplify the equation first.
9x + 12 - 5 = ax + b
9x + 7 = ax + b
9x - ax - b = 7
Alright now plug in the numbers for each option.
I don't feel like doing all of them but I did A (one solution) and B (no solution because the two 9x's cancel out).
1)
a. 614
b. 6140
c. 61400
d. 351.8
e. 1,000,000,000
f. 392.673
g. 591.1
h. 5100
i. 734000
j. 7141400
k. 35.1
l. 80500
Sophie would’ve earned more
She would’ve earned $37 more
Calculations:
Sophie:
$330(1+4%*2)
=$356
Simple interest: $356-$330
=$26
Avi:
$290(1+5%*2)
=$319
Simply interest: $319-$290
=$29
$29-$26
=$3