Answer:
What are the choices
Step-by-step explanation:
Either
y=mx+b
or
y=-1/m*x+k
This problem is an another case which makes use of the concept of ratio and proportion. The ratio $2.52 per 0.5 gal should be proportional to the price of 4 gallons of milk. Let x be the price,
($2.52 / 0.5 gallon) = (x / 4 gallons)
The value of x is 20.16. Hence, the price of 4 gallons of organic milk is $20.16.
So, we first want to think about PEMDAS - parentheses (in this case, brackets first), exponents (that 2³), then multiplication division addition subtraction, from left to right.
First, we take a look at what's inside the bracket:
2³[(15-7)(4-2)] ← Solve the stuff inside the bracket first. Now, we look at parentheses, and solve the things inside the parentheses
2³[(8)(2)] ← Multiply them together since they are inside the bracket
2³[16] ← Now that the bracket is taken care of, we look at the exponent. 2³=8, so:
8*16 ← Now multiply...
The answer is <u>128</u>