Here are recipes for two mixtures of salt and water that taste different. Information about Salt Mixture A is shown in the table.
*** please look at the graph ***

Salt Mixture B is defined by the equation y = 2.5x, where x is cups of water and y is teaspoons of salt.

If you used 10 cups of water, how much salt would you use for mixture A? _

If you used 10 cups of water, how much salt would you use for mixture B? _

Which mixture would use more salt? _

How much more? _

The answer is 2 more teaspoons. 7 more teaspoons. Mixture B would use more salt,3 more teaspoons.

Step-by-step explanation:

entering that problem on the tube might get you an answer

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.