Answer:
i think x its 8
Step-by-step explanation:
Standard form
expand first then add
f(x)=3(x-7)²+5
f(x)=3(x-7)(x-7)+5
f(x)=3(x²-14x+49)+5
f(x)=3x²-42x+147+5
f(x)=3x²-42x+152
A is answer
Answer:
$120
Step-by-step explanation:
40% off means that the post reduction price is 60% of the original.
Therefore, if $45 is 60% of the original,
100% of the original price = 45 / 60 x 100 = $75
Therefore, the total cost of both = 45 + 75 = 120
The answer x = 11 is correct for problem 4. Nice work.
Use this x value to find the answer in problem 5. From problem 4, we're told that Romeo runs at a speed of 5 m/s. If he runs for x = 11 seconds,then he runs a total distance of:
5*x =(5 m/s)*(x meters) = (5 m/s)*(11 seconds) = 5*11 = 55 meters
The answer to problem five is 55 meters
