The ratio of boys to girls at local sports clubs is 3to1 if there are 45 girls how many boys are there

Describe the possible echelon forms of the standard matrix for a linear transformation t where t: set of real numbers is onto.

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Jamie went to home depot.she bought 25 bags of soil that cost $9 per bag.she bought 15 pots at $8 each,and she bought 23 bags of pebbles at $15 each.she used a coupon that gave her $5 off for every 100 dollars she spent.how much did jame pay at the end?