Write the simplified form of 5x-3-3x+6y+4 Simplify the expression 22+3⁴ ÷6
Evaluate the expression for a=3,b=4(2a+2b)2
Add 3x³+4x²+6x-x³+6x³

Pls me this is due today and i need i will make brainliest if you me answer correctly and i will report if you try to give me a dumb answer.

If you had $1,900,000, how many days would it take you to spend all if you spent $1 a second. (there are 86,400 seconds in a day)

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.