Answer:
The answer to your question is the last option
Step-by-step explanation:
Quadratic equation
2 = - x + x² - 4
Order the equation from the highest power to the lowest power. Do not consider 2 because it is not consider in the options given.
x² - x - 4 = 0
Identify a, b and c
(1) x² -(1) x - 4 = 0
a = 1 b = -1 c = - 6
Substitution
Let's assume
number of shorts is x
we are given
People bought 2 times as many T-shirts as shorts
so, number of T-shirts is 2*x=2x
Dots sells T-shirts ($3) and shorts ($7)
so, total price of T-shirts
so, total price of shorts
now, we are given
total sales were $520
so,
total price of T-shirts+total price of shorts = total sales
we will get equation
now, we can solve for x
so,
number of shorts is 40
number of T-shirts is 2*40=80............Answer
Answer: 4.7
<u>Step-by-step explanation:</u>
Use Soh Cah Toa