Which of the following functions are 1-1?
a. f(x) = x2 + 2x + 4
c. f(x) = 3x3 + 5x2 + 3x + 16
b. f(x) = x3 + 5x2 + 16
d. f(x) = 2x4 + x2 +5

What is the value of the expression i 0 × i 1 × i 2 × i 3 × i 4? 1 –1 i –i

Statements reasons 1. ab ? cd; ad ? bc 1. given 2. ac ? ac 2. reflexive property 3. ? adc ? ? cba 3. ? 4. ? dac ? ? bca; ? acd ? ? cab 4. cpctc 5. ? dac and ? bca are alt. int. ? s; ? acd and ? cab are alt. int. ? s 5. definition of alternate interior angles 6. ab ? cd; ad ? bc 6. converse of the alternate interior angles theorem 7. abcd is a parallelogram 7. definition of parallelogram what is the missing reason in step 3?

Masons cell phone company charges $0.12 for every text message he sends plus $2.50 per month if mason sent 25 messages this month how much money does he owe the one with the correct answer and explanation gets 10 points and is marked as the brainliest answer