1b. 31 kg of bananas cost $124. How much
would 10 kg cost?
I need help

40$

Step-by-step explanation:

first we find the cost of one kg of bananas

to do that we divide 31 to 124

124÷31=4

now to find How much would 10 kg cost we multiply 10 and 4

10x4= 40

hope it helps

d

step-by-step explanation:

hello and welcome!

so, when we see the words "proportional" along with a table, we need to know that we're looking numbers that divide by the same thing.

looking at this table, we simply have to do a trial and error, and divide to see which numbers have the same quotient. if you look at choice a & c, they both have equal quotients for three of the numbers, with one exception, so those can't be the answer. looking at b, there is no similarity, so that can't be it. then, we see d; if you divide all the numbers in the table, you'll see that they all divide by two, which is a proportional relationship, and our answer!

also, always remember that the x will always be the number that goes into y, and somewhere behind this table, is a formula. for this specific table, the formula would be:

since our x-value is being divided by two to get the y-value. and if they were to ask for more numbers in the series, this is the formula you would use to find them.

the surface area is 124cm²

step-by-step explanation:

length: 4cm

width: 9cm

height:   2cm