Mike read for 450 minutes this month his goal is to get to 10% minutes next month how many minutes will he read during the two months

450 minutes

Step-by-step explanation: he read 450 minutes the first month which mean you'll need to multiply .10 by 450 which is

45

then you'll need to add the first month(450) and the second(45)

and that gives you...

495 minutes

truly sorry if this isn't right.

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.