72 or 28 is the answer i hope this helped you :)
Answer:
f-1(x) = (x-8)/2
Step-by-step explanation:
f(x) = 2x+ 8
y = 2x + 8
replacing y and x
x = 2y + 8
2y = x- 8
y =( x-8)/2
f-1 (x) =( x-8)/2
Solving this involves substitution of values into the given formula and applying basic arithmetic.
<u>Weight of Car is 2.1 tons</u>
We are told that the dimensions of the rectangle are 7in and 5in.
Formula for area of a rectangle is;
A = Length x breadth
Thus;
A = 7 × 5
A = 35 in²
We are also given;
Air pressure; P = 30 psi
A car has 4 tires and so;
Number of tire; N = 4
We are told that formula for weight of the car in ton is;
W = APN/2000
Plugging in the relevant values;
W = (35 × 30 × 4)/2000
W = 2.1 tons
Read more at; brainly.com/question/2926797
Answer:
35 2-point questions, and 15 5-point questions
Assume x 2-points question, so 50-x 5-points question
Total no of points: 2*x+5*(50-x)=145 points
2x+250-5x=145
-3x=-105
x=-105/-3=35 2-points questions
Remaining 50-35=15 5-points questions
ok so i really hope this helped and if it didn't then sorry
