Pls answer all questions x - 3 = 11
2x = 10
x4=10
x + 6 = 15
3x = 15
7 = x - 6
x - 5 = -7
x6 = -12
x - 7 = -17
-4 + x = 9
-7 + x = -10
-x = 11
7x = 0
12x = 7
x3= -5

Two blends of tea are mixed to make a blend that will be sold at the fair. black tea sells for $2.20 per pound and orange pekoe tea sells for $3.00 per pound. how much of each should be used to obtain a 4lb blend selling for $2.50 per pound?

What is the expression in factored form? -20x^2 - 12x a. 4x(5x+3) b. -4x(5x-3) c. -4(5x+3) d. -4x(5x+3)

Which function has an inverse function? a. f(x)= |x+3|/5 b. f(x)= x^5-3 c. f(x)= x^4/7+27 d. f(x)= 1/x²