Which of the following is a quadratic function? (Mark all that apply) a
t(x)=x^2

b
f(x)=2x+20

c
c(x)=2x^3+4x^2-6
d
h(x)=x^2-12x+1

c

Step-by-step explanation:

..

x-3y=4

step-by-step e

answer: the answer is one

step-by-step explanation:

pemdas, in this situation there is no parenthesis or exponents so you go to multiplication, 1x1=1, then division 1/1= 1 then addition 1+1=2 then subtraction 2-1=1