Please help i dont understand these. Lines AB and CD are parallel. If ∠3 measures (3x + 20)°, and ∠4 measures 70°, which equation could be used to solve for x?

Customers at an ice-cream shop took a survey .the results showed that 144 customers rated the shop as being "very satisfactory ."this number represented 45%of the total nunber of customers who took the survey

How many real and imaginary solutions does the equation x^2-3x=-2x-7 have?

Which of the symbols correctly relates the two numbers below check all that apply 6? 6