Find the value of x if the points (x,5) and (3,7) lie on the line whose slope is 4/7

x = -4

Step-by-step explanation:

Write and solve an equation in which the slope from the definition of slope is on the left side and the given slope, 4/7, is on the right side:

        7 - 5          4

m = =

         3 - x         7

Simplifying with the aim to find the value of x:

2(7) = 4(3 - x), or 7 = 3 - x.  Then x = -4.

ok

step-by-step explanation:

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt