3b. Write an expression for the new balance using as few terms as possible. *
A checking account has a balance of $350. A customer makes two withdrawals, one $50 more than the
other. Then he makes a deposit of $75.

$315

Step-by-step explanation:

350-50= 300

300-50=250

250+75= 315

what are the things "represented below"?

step-by-step explanation:

nobody can if you dont give the choices

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.