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!
Answer: 1460
Step-by-step explanation: I put it in a calculator.
D is distance-*2 meters* in 3 hours
Answer:
Each number is being multiplied by 3.
Thr next 3 numbers would be, 486, 1,458, and 4,374
Answer:
c
Step-by-step explanation:
as the roots are imaginary so it does not intersect x-axis.
C
