Can you please take a picture of each pair of points
I'm assuming that you meant:
y = 7x² + 3
Remember! Inputs are always x values (unless stated otherwise). Meaning the problem says:
x = 4
y = 7(4)² + 3
The square only applies to the 4. The 7 is not going to be squared! (To be exact it only applies to whatever the value of x is.
4² = 4·4 = 16
Remember:
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction
Follow PEMDAS from left to right (or in the case above from top to bottom).
7·16 + 3 = ?
16·7 = 10·7 + 6·7 = 70 + 42 = 112
(All I did to multiply was break it up into parts. If it confuses you don't worry about it, and just multiply it out like normal or use a calculator if you are allowed to)
112 + 3 = ?
Our output is:
115!
Step-by-step explanation:
-6 ( x - 2y ) ( -12x ) / ( -2 )
-6 ( -3 - 2*-5 ) -12 / -2 = 6
-6 ( -3 + 10) 6x
-6 ( 7 )
-42
To complete the situation, this can be found elsewhere:
<span>People: 5 Time: 2.10
People: 8 Time: 3.36
People:14 Time: 5.88
People:23 Time: 9.66
</span>
The choices are the below:
A: p = 0.42+ s, where s is time and p is the number of people
B: s = 0.42p2, where s is time and p is the number of people
C:p = 0.42+ s, where s is time and p is the number of people
D:s = 0.42p, where s is time and p is the number of people
The answer is letter D. Hope it helps.
B
Step-by-step explanation:
I took the test and it's B!