What is the answer? Please help I need it today.

What is the standard form of -5x^2+2x^4-11+x^3+3x

What are two numbers that add up to -9 and multiply to -10 best answer gets branliest and 100 extra points

The monthly texting plan of all star cell is $11 per month and $0.25 per text. the monthly texting plan of top line cell is $14 per month and $0.15 per text. a student wants to set up a system of equations to find the number of texts for which the total monthly cost of the two companies is the same. he uses the variables x and y. he lets y represent the total monthly cost. what will x represent? x = number of texts x = cost of the total number of texts x = total monthly cost x = cost of each text