3x8= $24 for a box of paper. So, D) 24x12 is the answer. For 12 boxes it would cost $288.
Answer:
Step-by-step explanation:
3 ln(2x) + 7 = 15 Subtract 7 from both sides
3 ln(2x) = 15 - 7 Combine
3 ln(2x) = 8 Divide by 3
ln(2x) = 8/3 Do the division. Take the antilog of both sides.
e^ln(2x) = e^(8/3)
2x = 14.392 Divide by 2
x = 14.392
x = 7. 196
Covert standard form to slope-intercept form
4x + 7y + 3 = 0
7y = -4x - 3
y = (-4/7)x - 3/7 so the slope of this line is -4/7
The slope perpendicular to this is - 1 (-4/7) = 7/4
The required line has equation:-
y - 1 = (7/4)(x - (-2))
y - 1 = (7/4)x + 14/4
y = (7/4)x + 18/4 That is the answer in slope intercept form
Multiply through by 4
4y = 7x + 18
7x - 4y = 18 in Standard form Answer
The y-intercept is obtained when we equate x to 0, where x is the number of songs bought. Thus, before buying any songs, $6 have to be paid. This is the cost of joining the the music club. The second statement is true.
