PLEASE HELP ME ASAP Estimate using mental math: 32.4970 – 4.02. Show how you would estimate mentally, then show your estimated answer.

28.4770

Step-by-step explanation:

I know that 32-4 is 28 and the 0.4970-0.02 is 0.4770 because 0.09-0.02 is 0.07 so you then put your answers together and you get28.4770.

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

48 / 6 = x

in this case, x will equal the amount of money in each card!

x therefore will be 8.

trent had $8 in each birthday card.