How do I write an equation for #17?
2 answers:
let's say we have two phone companies, A and B, A charges $16.95 monthly and $0.05 a minute, B $22.95 monthly and $0.2 a minute.
company A
1 minute...................... $16.95 + 0.05(1)
2 minutes.................... $16.95 + 0.05(2)
3 minutes.................... $16.95 + 0.05(3)
x minutes.................... $16.95 + 0.05(x)
company B
1 minute...................... $22.95 + 0.02(1)
2 minutes.................... $22.95 + 0.02(2)
3 minutes.................... $22.95 + 0.02(3)
x minutes.................... $22.95 + 0.02(x)
when will the cost of each plan be the same? well, that happens when 16.95 +0.05x = 22.95 + 0.02x.
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Answer:
50% pen first box and 62.5% crayon from second box
Step-by-step explanation:
The first box contains 4 items, 2 of each. This means there are pens. This gives you a
chance of picking out a pen. This can be written as 50%.
The second box contains 8 items, 3 color pencils and 5 crayons. This means of the contents are crayons, meaning you have a
or 62.5% chance of picking a crayon.
*For working out the percentages, you should convert the fraction to a decimal and then multiply that by 100.
**This content involves fractions, decimals and percentages, as well as basic probability, which you may want to revise. I'm always happy to help!