小红种了一株树苗,开始时树苗高是40厘米。栽种后树苗每周长高约15厘米,大约几周后树苗长高到1米?'O'd-z,s)A6R2P9r*x:f7o7o6n
解:设大约x周后树苗长高到1米。'O'd-z,s)A6R2P9r*x:f7o7o6n
算式:提示5d'W0U:g2U1c5K1t1M'O'd-z,s)A6R2P9r*x:f7o7o6n
答:大约1y+K'W3l1S,F'L*v(H+f,F周后树苗长高到1米'O'd-z,s)A6R2P9r*x:f7o7o6n