Answer:
-5
Explanation:
Because it’s right
256
Just keep muliplying the number
8*2
16*2
32*2
64*2
128*2

x = 1.50 + y
*40x + 40y = 940
40 (1.50 + y) + 40y = 940
60 + 40y +40y = 940
60 + 80y = 940
80y = 940 - 60
80y = 880
y = 880/80
y = 11
*x - y = 1.50
x - 11 = 1.50
x = 1.50 + 11
x = 12.5
x=DAVID
Y=PETER
Answer:
$5.35.
Step-by-step explanation:
The number of checks written after the first 10 = 24 - 10 = 14.
The fees for these checks = 14 * 0.10
= $1.40.
So his fees for March are 3.95 + 1.40
= $5.35.
C. they might miss realising that the first 10 checks are free.
Answer:
Step-by-step explanation:
This is calculus, but I don't get fractions in the end. To maximize or minimize any function, you need to find the derivative of it, set it equal to 0, then solve for the critical values.
Our given equation is
x + y = 215 and we want to maximize the product, xy. Therefore,
y = 215 - x so its product in terms of x is
x(215-x) which is
. The derivative of this is
215 - 2x. Set it equal to 0 to maximize it.
215 - 2x = 0 so
-2x = -215 and
x = 107.5.
Sub this in to solve for y:
y + 107.5 = 215 and
y = 107.5
The product is 11556.25, not that you need it.