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3 years ago

Help me please!!!!!!!!!!

Mathematics

1 answer:

Mkey [24]3 years ago

3 0

Answer:

d.) y = 10 + .75x

Step-by-step explanation:

This word problem can be written in the form of y = mx + b

SInce the starting value is 10, this is also our b value and our y intercept.

The rate of change is .75 cents per pound, our x value is the # of pounds.

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Two-thirds a number plus 4 is 7

ICE Princess25 [194]

The equation (form) is: $\frac{2}{3}x + 4 = 7$

The solution of the equation is: $x = \frac{9}{2}$

Explanation:

First, let's call the number we are going to solve for "x".

Then two thirds of this number can be written as:

$\frac{2}{3}x$

Then "plus 4" means add 4 we get:

$\frac{2}{3}x + 4$

"is 7" means that the above expression is equal to 7 (as follows):

$\frac{2}{3}x + 4 = 7$

The solution of the above equation is:

$\frac{2}{3}x + 4 = 7 \\ \frac{2}{3}x = 3 \\ x = \frac{9}{2}$

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